var total = 0;
var dbaStatCollections = function(){};
 
dbaStatCollections = function(){
  collNames = db.getCollectionNames();
  for (var index = 0; index < collNames.length; index++) {
    var coll = db.getCollection(collNames[index]); 
    var stats = coll.stats();
    print('ns,count,size,totalIndexSize');
  print(stats.ns + ',' + stats.count + ',' + stats.size + ',' + stats.totalIndexSize);
  }
}
 
dbaStatCollections();

db.system.js.remove({"_id":"dbaStatCollections"});
 
db.system.js.save(   
{
  _id : "dbaStatCollections" ,
  value : function () {
    collNames = db.getCollectionNames();
    for (var index = 0; index < collNames.length; index++) {
      var coll = db.getCollection(collNames[index]);
      var stats = coll.stats();
      print('ns,count,size,totalIndexSize');
      print(stats.ns + ',' + stats.count + ',' + stats.size + ',' + stats.totalIndexSize);
    }
  }
}
);
 
db.loadServerScripts();
 
dbaStatCollections();